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Perceptual Inhibition is Associated with Sensory Integration in Standing Postural Control Among Older Adults

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  • Mark S. Redfern
  • J. Richard Jennings
  • David Mendelson
  • Robert D. Nebes

Abstract

In older adults, maintaining balance and processing information typically interfere with each other, suggesting that executive functions may be engaged for both. We investigated associations between measures of inhibitory processes and standing postural control in healthy young and older adults. Perceptual and motor inhibition was measured using a protocol adapted from Nassauer and Halperin (2003, Dissociation of perceptual and motor inhibition processes through the use of novel computerized conflict tasks. Journal of the International Neuropsychological Society, 9, 25--30). These measures were then correlated to postural sway during standing conditions that required resolving various levels of sensory conflict, for example, world-fixed versus sway-referenced floor and visual scene. In the older adults, perceptual inhibition was positively correlated with sway amplitude on a sway-referenced floor and with a fixed visual scene (r = .68, p < .001). Motor inhibition was not correlated with sway on either group. Perceptual inhibition may be a component of the sensory integration process important for maintaining balance in older adults. Copyright 2009, Oxford University Press.

Suggested Citation

  • Mark S. Redfern & J. Richard Jennings & David Mendelson & Robert D. Nebes, 2009. "Perceptual Inhibition is Associated with Sensory Integration in Standing Postural Control Among Older Adults," The Journals of Gerontology: Series B, The Gerontological Society of America, vol. 64(5), pages 569-576.
    • Handle: RePEc:oup:geronb:v:64b:y:2009:i:5:p:569-576
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    File URL: http://hdl.handle.net/10.1093/geronb/gbp060
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